[Wayland-bugs] [Bug 759299] wayland: possible infinite loop in gdkwindow-wayland

[gtk+ (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=759299

--- Comment #8 from Olivier Fourdan <ofourdan at redhat.com> ---
Created attachment 317426
  --> https://bugzilla.gnome.org/attachment.cgi?id=317426&action=edit
wayland: Check transient loop

Note, this patch tries to avoid the problem by setting the transient
relationship before checking for a possible loop. If such a loop is found, the
previous transient value is restored.

Yet, because unmap_subsurface() is called first and also uses transient_for, we
need to proceed till the end of the function
gdk_wayland_window_set_transient_for() as if we modified the transient, even if
the value is not changed so that the subsurface has a chance to be recreated if
needed.

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